Answer: This element has 3 valance electrons and it will loose electrons to form a [tex]Al^{3+}[/tex] ion.
Explanation:
Aluminium is the 13th element in our periodic table.
The valance shell electronic configuration of this element is: [tex][Ne]3s^23p^1[/tex]
As, there are 3 electrons in the outermost shell, Therefore, total number of valence electrons of this element are 3.
For this element loosing 3 electrons will be easy than to gain 5 electrons to acquire a full outer most shell configuration. Therefore, this element will loose 3 electrons.
When this element looses 3 electrons, it looses negative charge and starts to form positive ion. And it form an ion having +3 charge.
